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水溶液中的离子平衡与化学平衡知识密切相关,是化学平衡原理的具体化,因此,本章又是化学平衡学习的继续与拓展.尤其溶液中三个守恒关系的应用更是难点和重点,也是学生易错的地方.我将对此作出分析,浅谈一下自己的看法,以便让学生建构完整的平衡知识体系和更灵活的应用.一、基础的守恒关系1.电荷守恒电荷守恒是指溶液呈电中性,即电解质溶液中所有阳离子所带正电荷总数等于所有阴离子所带负电荷总数,而与溶液的
Ion balance in aqueous solution is closely related to knowledge of chemical equilibrium and is the embodiment of the principle of chemical equilibrium. Therefore, this chapter is the continuation and expansion of chemical equilibrium learning.Especially the application of the three conservation relations in solution is more difficult and more important, I will analyze this, talk about my own views, in order to allow students to construct a complete balance of knowledge system and more flexible application. First, the conservation of the basic relationship 1. Charge conservation Conservation of charge refers to the solution was Neutral, that is, the total positive charge of all cations in the electrolyte solution is equal to the total negative charge carried by all the anions,